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Vulnerability Score 4.3 4.3
CVE Id CVE-2012-2317
Last Modified 08 Aug 2012 12:00:00
Published 07 Aug 2012 03:55:01
Confidentiality Impact NONE NONE
Integrity Impact PARTIAL PARTIAL
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity MEDIUM
Authentication NONE



The Debian php_crypt_revamped.patch patch for PHP 5.3.x, as used in the php5 package before 5.3.3-7+squeeze4 in Debian GNU/Linux squeeze, the php5 package before 5.3.2-1ubuntu4.17 in Ubuntu 10.04 LTS, and the php5 package before 5.3.5-1ubuntu7.10 in Ubuntu 11.04, does not properly handle an empty salt string, which might allow remote attackers to bypass authentication by leveraging an application that relies on the PHP crypt function to choose a salt for password hashing.

Vulnerable Systems

Operating System

  • Canonical Ubuntu Linux 10.04

  • Canonical Ubuntu Linux 11.04

  • Debian Linux


  • Canonical Php5 5.3.2-1ubuntu4.16

  • Canonical Php5 5.3.2-1ubuntu4.17

  • Canonical Php5 5.3.5-1ubuntu7.10

  • Canonical Php5 5.3.5-1ubuntu7.9

  • Debian Php5-common 5.3.2-1

  • Debian Php5-common 5.3.3-7%2bsqueeze4


UBUNTU - USN-1481-1

MLIST - [oss-security] 20120505 Re: Debian/Ubuntu php_crypt_revamped.patch

MLIST - [oss-security] 20120504 Debian/Ubuntu php_crypt_revamped.patch


Last Updated: 27 May 2016 10:53:35